login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A285026 Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1. 1
2, 26, 442, 6460, 96458, 1449814, 22043878, 336883696, 5171750894, 79634735346, 1229304353554, 19015329654036, 294656614022300, 4573021347213134, 71071712948803680, 1105968089007186270, 17230453143587374712 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A285030.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..1. .0..0..1..1. .0..0..1..0. .1..1..0..0. .1..1..1..0
..0..0..1..1. .1..1..0..1. .1..1..0..1. .0..1..0..0. .0..0..1..1
..0..0..1..0. .1..0..0..0. .0..1..1..0. .0..0..1..0. .0..0..0..0
..0..1..0..0. .0..0..0..0. .0..1..0..0. .1..1..0..1. .0..0..0..0
CROSSREFS
Cf. A285030.
Sequence in context: A359924 A245999 A355725 * A137100 A228411 A364827
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 08 2017
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 20 21:52 EST 2024. Contains 370219 sequences. (Running on oeis4.)